Pot making apparatus



June 13, 1933. RM BRASKET 1,914,004

POT MAKING APPARATUS Filed Aug. 4. 1931 .3 Sheets-Sheet l Je? @WQL June 13,- 1933.

R. M. BRASKET 1,914,004

POT MAKING APPARATUS Filed Aug. 4, 1931 3 Sheets-Sheet v2 I INVENTOR June 13, 1933. R M. BRASKET 1,914,004

POT MAKING APPARATUS Filed Aug. 4, 1931 3 Sheets-511661'I 3 Patented .lune 13, 1933 :fr SIA-'IES www OFFICE..

ROBERT ii/L BRASKET, oF CRYSTAL CITY, MIssouRI, AssIGNoR Tol PITTSBURGH PLATE GLASSHCCMPANY, A CORPORATION or PENNSYLVANIA POT MAKING APPARATUSy Appiication. fued'auguse 4, 193i.' seri'ai No. 554,975.

5 Tlieiv'ntionhas `for its objects the procili'cfallytlrie invention lhas in part'to do with the'veiti'onis illustratdin the 'accompanynig dl-lawigswierei f TOFigureI"i's"af side 'elevation partially in Setionrjif"thelimproved apparatus. l Fig.

'-is pllrivievv. Fig. 3i's an end elevation, Af Figs.' arid''are detail views, Fig. 4 "a," pla'vi'evv, 'Figf' an end view, and F-gzpa sectiii'ntheijne K7T-VI of Fig. 4.

manning",tgrossmembera upon' which is nntdfahydratilic cylinder 3. The frame-4 wvbrlal'so' supports -our vertical guide rods 4l upon which is mounted a cross-head for "f supportingthe' mold plunger 5. This crossh'ead"islinade up hf' aiplurality of members 6,7,'8','9, 10'and 11"(Fig's. 1 and 2) provided with suitable guide collars 12 slidably engagingltl'ierods 4. The cross-head also carriesia pair o 'f downwardly projecting arms 13, 1351er* centering'the pot mold, as later described,.suc/harmsbeingl braced at their lower'en'd's by themembers 14, 14.

It, i`"The."i'nold plunger is brought to its lpositionof use', as indicated in Fig. 1, upon the t'iolleydf iipoii'which'lit is releasably susp.ended,'such trolley being adapted to move albngithe approach sections 16, 16 (Fig. 2)

. arid' the Section 17 which is carried by the cross-head.' In the operationof forcing the plunger downward into the mold, it is necessaryj.to transmit nforce rom the cross-head tovlthe `imold plunger independent of the trolley' and'inorder to accomplish this function-,'four,rod's 18 yare employed which are threaded into the crossih'ead and provided' with handWheels, such rods lbeing adapted to engage 'the metal-cover plate-20 of the mold plunger at their-'lower ends.` The cros'sV heady is moved upand down by meansof the- 55 lying in the hydraulic cylinder 3.

Extending transversely beneath the cros'sl rod 21 Connected at its upper end to a plunger headv is the track 22 on which is mounted a M truck 23, such truck carrying. the pot'mld 60 which is of any approved design preferably comprising acmetal' shelli24 put together sections, which sections carryonftheirinner faces a lining '25 'of lplaster of paris, tliisbe'l x ing a mold construction which is Well-known 65 in theart. ImmediatelyfbeloW-the center of the Cross head is atracksection'comprising the rails26, 26 (Figs. 4, 5 and 6) mounted upon a 'slideplate 27 for movement'trans;

versely of the track 22, the purpose of this 76 mounting being to' permit more exact centering of the truckand mold with respect tothe mold plunger 5. The rails 26, 26 are secured to the'plate27 by means vofthe'pins'28,'28"'and the plate 27'is"'slidably"mounted 'uponr the 75 plates 29, 29 (Fig. 6) suchplates 29, 29 being in turn secured to a pair of ch'annels'30, 30; The' rails 26, 26 are secured together by a pair of tie rods 31, 31 Whose ends eXtend'through slots 32, 32 in the rails. The rectangle formed 8o of the rails 26, 26 and tie rods 31, 31 is capable of a slight rocking movement on the' pins 28, 28 due to the fact that there is some spring in the parts and this capability of rocking movement assists in permitting the centering 85 of the truck and pot mold with respect tothe pot plunger 5 when the parts are moved to the position indicated in Fig. 1 With'the centering arms in engagement with the sides of the pot mold. The arms 13 are 'of the cross sec- 96 tion indicated in Fig. 2, being relatively rigid with their inner flanges fitting snugly in suitable grooves in the side Walls of the pot mold. The sliding plate 27 is movable on the guide plates 29, 29 by means of the 95 connecting rod 32 pivoted'at one end to 'the edge of the plate 27 and at its other end to the lower end of the lever 33.

Inoperation, the plunger 5 is broughtto the position shown in Fig. 1 by means of the 100 trolley riding upon the trolley tracks 16 and l?. The crosshead is then raised by means of the hydraulic cylinder 3 until the plunger 5 lies at a position high enough to give clearance for the positioning of the pot mold. The pot mold is-iilled at-some point remote from the pressing apparatus with a body of semi-'Huid clay sutcient to form the pot and is moved on the truck 23 along the tracks 22 and 26to`the position shown in Fig. 1 directly beneath the plunger 5L The thrust rods 18 are now adjusted by means of the hand wheels 19 until their lower ends engage the plate 20 with the axis of the plunger ,in a true yertical position. The plunger is now lowered and the anges-of the guidearms 13 are caused=to engagecthe. slots `or -guideways in the side Wallsiot Athe-mold and the plunger is pressed down-into" the clay causingE it to rise and fill the mold. During this movement .the mold `is caused to assume-a position in'which it is eX- actly centered with respect to. the mold plunger; by reason of ythe engagement.- of 'the guide arlns 13, 13 withithe guide slots `in the sidewalls ofthe pot. After the 'clay'in the mold'liasset sucientlytomaintain its shape, tlieplunger ads-,withdrawn and the pot on its truck isif removedv `tothe drying room, thus completing: the' cycle oigoperation.`

It-Wilfl be apparent from the foregoing tha the-apparatus piovlides for the1formation of pots inran accurate-and convenient manner, the guide arms v13, 13 serving to insure an' exactlce-ntering lof thelpot with respect to the plungerwithout the necessity of making adjustments-.and:measurements in order to insurethatthe partsfarein their proper relative Jposition. Alconsiderable amount3 ottime is-thu'sgsavedandthe .pots produced are: of

. uniform#:constructionthroughout. The conveniencein operation incident to 'the use of the tracks.y fand.- trolley in conjunction,v with the lrods-18 will be readily apparent to those skilled; in theart. .f r

What I-claim is:

--1..In combinationin apot making apparatus, a cross-.head guided for vertical movement,power means for raising and-lowering the cross-headgza'trackleading beneath the cross-head,- a truck thereon carrying a pot mold, having guideways on its opposite sides, a track section beneath the center ofthe crosshead mounted for free movement transversely oi the rest ofthe track, a mold plunger carried Acentrally of the cross-head, and a pair-of centering arms projecting downwardly. from the cross-head on opposite sides of the plunger and adapted to engage said guideways and center the mold and truck f' with respect to said plunger.

2- In combination in pot making apparatus, a cross-head guided for vertical movement, power means-for raisingl and lowering A the cross-head, a track leading beneath the cross-head, a truck thereon carrying a pot 'flaw K. l :v 1,914,004:

mold having guideways on its opposite sides, a trolley track section carried by the lower side of the cross-head, another trolley track section leading to said rst track section, a

trolley mounted for movement on said trolley track sections, a mold plunger suspended on the trolley, land a pair ofcentering arms projecting downwardly from the cross-head on opposite sides of the plunger and adapted Ato engage said guideways and center 'the mold and truck with respect to said plunger.

3. In combination in pot making apparatus, a. cross-head guided for vertical movement, power means for raising and lowering the cross-head, a track leading beneath the cross-head, la truck thereon carrying a pot mold havingy guidewa-ys onthe opposite sides,- a track section beneath the center ofthe crosshead mounted for free movement transversely.y

oitv therest ofthe track, adjustable thrust means carried by the cross-head and; adapted to engage the mold plungerwhen such plung-l er is positioned centrally .of the cross-head, and a pair of centeringv arms. projecting downwardly lfrom the cross-head one-oppoa track section beneath the center ofthe cross-- i" head mounted for freemovement transversely of the 'rest ot the track, means for moving said track section, a mold plunger carried centrally of the cross-head, and a pair of centering arms projecting downwardly from the cross-head on opposite sides of the-plunger andadapted to engage said guideways and center the mold and truck with respect to said plunger.

5. In combination in pot making apparatus, a cross-head guidedv for vertical movement, power means for raising and lowering the cross-head, a track leading beneath the cross-head, a truck thereon carrying a pot mold having guideways on its opposite sides, a track section beneath the center of the crosshead mounted for free movements transversely of the rest of the track, and for limited rocking movement, means tor moving said track section transversely, a mold plunger carried centrally of the cross-head, and a pair of centering arms projecting downwardly from the cross-head on opposite sides of the plunger and adapted to engage said guidewa-ys and center the mold and truck with respect to said plunger.

6. In combination in pot making apparatus, a cross-head guided for vertical movement, power means for raising and lowering the cross-head, a track leadingv beneath the cross-head, a truck thereon carrying a pot mold having guideways on its opposite sides, a track section beneath the center of the cross-head mounted for free movement transversely of the rest of the track, and

vthrust means carried by the cross-head and adapted to engage the mold plunger when such plunger is positioned on the supporting trolley centrally of the cross-head.

7. In combination in pot making apparatus, a cross-head guided for vertical movement, power means for raising and lowering the cross-head, a track leading beneath the cross-head, a truck thereon carrying a pot mold having guideways on its opposite sides, a track section beneath the center of the crosshead mounted for free movement transversely of the rest of the track, and thrust means carried by the cross-head and adapted to engage the mold plunger when such plunger is positioned on its supporting trolley centrally of the cross-head, said thrust means consisting of a plurality of rods threaded into the lower side of the cross-head and adapted to engage the top of the mold plunger.

n testimony whereof, I have hereunto subscribed my name this 6th day of July, 1931.

ROBERT M. BRASKET. 

